Ballscrew mounting

Hi Folks,

I've assembled nearly everything I need to implement my mill/drill CNC
conversion, but I'd like to draw on the experience of this group to find a
solution for mounting the ball screws. I've got the Harbor Freight version
of the RF30 mill/drill - you can see pictures on my website
(http://www.swayze.org.shop/ ).

Y-Axis:
I've disassembled the table and found that the leadscrew has no
mounting on the far end - just a thrust bearing at the handle. My original
plan was to provide bearings at both ends, but now I'm considering
putting bearings just at the front and letting the rear hang freely. Even if
the saddle is cranked forward as far as it can go, the ball nut will still be
in the center of the ball screw. How have others approached this?

X-Axis:
Since this ball screw is so long (approx. 36") I'm going to support both
ends with dual linear contact bearings, each separated by 3/4" or so.
Though the information was tough to come by, I found some info on how
to configure the linear contact bearings on the web.

In general, have others removed the existing mounting brackets and
simply made a new housing using the existing mounting holes? Is it
possible to rework the mounting flanges already present? I've seen a
couple of pictures of people using the 3" square steel tubing to mount
the motors, but it seems like once it was bolted to the saddle/table
there would be no room for the bearings. Pointers?

Sorry if I rambled a bit, but I'm having a hard time getting my arms
around the whole mounting issue. Any help would be greatly
appreciated.

Thanks,
Jeff